/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshNormalsFunctions.h
Recompute the normals of TargetMesh by setting the normals of each triangle vertex to the triangle/face normal. Each vertex will have a unique normal in each triangle, ie there will be hard edges / split normals at every mesh edge
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * SetPerFaceNormals ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [UGeometryScriptDebug](API\Plugins\GeometryScriptingCore\GeometryScript\UGeometryScriptDebug) * Debug )